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on god, i can send 48 bits?

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This commit is contained in:
kuba
2025-12-27 15:03:23 +01:00
parent 2a2a8713b3
commit e32558ecf5
6 changed files with 87 additions and 49 deletions
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scripts/0-rds2_oda.lua
+52 -27
View File
@@ -1,57 +1,82 @@
local RDS2_ODA = { aid = 0, data = 0, handler = false }
_RDS2_ODA = { aid = 0, data = 0, handler = false, file_related = false }
function RDS2_ODA.new(aid, data, handler)
local instance = { aid = aid or 0, data = data or 0, handler = handler or false }
setmetatable(instance, { __index = RDS2_ODA })
function _RDS2_ODA.new(aid, data, handler, file_related)
local instance = { aid = aid or 0, data = data or 0, handler = handler or false, file_related = file_related or false }
setmetatable(instance, { __index = _RDS2_ODA })
return instance
end
local RDS2_ODAs = {}
local RDS2_ODA_aid = true
local RDS2_ODA_pointer = 1
_RDS2_ODAs = {}
_RDS2_ODA_aid = 0
_RDS2_ODA_pointer = 1
---This function is defined externally
---@param aid integer
---@param data integer
---@param file_related boolean
---@return integer oda_id
function register_oda_rds2(aid, data)
local oda = RDS2_ODA.new(aid, data, false)
table.insert(RDS2_ODAs, oda)
return #RDS2_ODAs
function register_oda_rds2(aid, data, file_related)
local oda = _RDS2_ODA.new(aid, data, false, file_related)
table.insert(_RDS2_ODAs, oda)
return #_RDS2_ODAs
end
---This function is defined externally
---@param oda_id integer
---@param data integer
function set_oda_id_data_rds2(oda_id, data)
if oda_id > #RDS2_ODAs then return end
RDS2_ODAs[oda_id].data = data
if oda_id > #_RDS2_ODAs then return end
_RDS2_ODAs[oda_id].data = data
end
---This function is defined externally
---@param oda_id integer
---@param func RDS2_ODAHandler
function set_oda_handler_rds2(oda_id, func)
if oda_id > #RDS2_ODAs then return end
RDS2_ODAs[oda_id].handler = func
if oda_id > #_RDS2_ODAs then return end
_RDS2_ODAs[oda_id].handler = func
end
function rds2_group(stream)
if #RDS2_ODAs == 0 then return false, 0, 0, 0, 0 end
if RDS2_ODA_pointer > #RDS2_ODAs then RDS2_ODA_pointer = 1 end
local oda = RDS2_ODAs[RDS2_ODA_pointer]
local channel = (RDS2_ODA_pointer & 0x40) << 8
RDS2_ODA_pointer = RDS2_ODA_pointer + 1
if RDS2_ODA_aid then
-- TODO: add support for the multi aid thing (page 49)
RDS2_ODA_aid = not RDS2_ODA_aid
return true, 1 << 15 | channel, oda.aid, (oda.data & 0xffff0000) >> 16, (oda.data & 0xffff)
if #_RDS2_ODAs == 0 then return false, 0, 0, 0, 0 end
if _RDS2_ODA_pointer > #_RDS2_ODAs then _RDS2_ODA_pointer = 1 end
local oda = _RDS2_ODAs[_RDS2_ODA_pointer]
local channel_offset = 16 * (oda.file_related and 1 or 0)
local channel = ((_RDS2_ODA_pointer - 1 + channel_offset) & 0x3F)
_RDS2_ODA_pointer = _RDS2_ODA_pointer + 1
local next_oda = nil
if _RDS2_ODA_pointer <= #_RDS2_ODAs then next_oda = _RDS2_ODAs[_RDS2_ODA_pointer] end
if _RDS2_ODA_aid == 0 then
_RDS2_ODA_aid = 1
local block1_base = (1 << 15) | channel
if next_oda ~= nil and next_oda.data ~= 0 and oda.data <= 0xffff then
_RDS2_ODA_pointer = _RDS2_ODA_pointer + 1
return true, block1_base | (1 << 6), oda.aid, oda.data, next_oda.aid
elseif next_oda ~= nil and oda.data == 0 and next_oda.data <= 0xffff and next_oda.data ~= 0 then
_RDS2_ODA_pointer = _RDS2_ODA_pointer + 1
return true, block1_base | (2 << 6), oda.aid, next_oda.aid, next_oda.data
elseif next_oda ~= nil and oda.data == 0 and next_oda.data == 0 then
_RDS2_ODA_pointer = _RDS2_ODA_pointer + 1
if _RDS2_ODA_pointer <= #_RDS2_ODAs then
local third_oda = _RDS2_ODAs[_RDS2_ODA_pointer]
_RDS2_ODA_pointer = _RDS2_ODA_pointer + 1
return true, block1_base | (3 << 6), oda.aid, next_oda.aid, third_oda.aid
else return true, block1_base, oda.aid, (oda.data >> 16) & 0xffff, oda.data & 0xffff end
end
return true, block1_base, oda.aid, (oda.data >> 16) & 0xffff, oda.data & 0xffff
else
RDS2_ODA_aid = not RDS2_ODA_aid
_RDS2_ODA_aid = _RDS2_ODA_aid + 1
if _RDS2_ODA_aid > 2 then _RDS2_ODA_aid = 0 end
if oda.handler then
local generated, a, b, c, d = oda.handler(stream)
return generated, 1 << 14 | channel | a, b, c, d
return generated, (1 << 14) | (channel << 8) | a, b, c, d
end
return true, 1 << 15 | channel, oda.aid, (oda.data & 0xffff0000) >> 16, (oda.data & 0xffff)
return true, (1 << 15) | channel, oda.aid, (oda.data >> 16) & 0xffff, oda.data & 0xffff
end
end